References
Hancock JM. Gene factories, microfunctionalization and the evolution of gene families. Trends Genet. 2005 Nov;21(11):591-5. PMID: #16153739#
Li WH, Yang J, Gu X. Expression divergence between duplicate genes. Trends Genet. 2005 Nov;21(11):602-7. PMID: #16140417#
Walter J, Paulsen M. The potential role of gene duplications in the evolution of imprinting mechanisms. Hum Mol Genet. 2003 Oct 15;12 Spec No 2:R215-20. PMID: #12944422#